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Enter a value, an expression, or a term with a variable like 10^n+1 to list a range. Switch to Database id to look a number up by its stored id. Reading never stores anything; use Create to add a number to the database. See the expression syntax & functions reference.

P · Proven prime
id #1100000009023231806 1,004 digits created 2026-07-30

Value

20519220892203901492307929287926695391152631869442745918413026516968931901045844337851524011971759647009743621512112339205953144812120089085955897836430170339487932608451314912287880959602862008686154020393897568132811499295358796956866266408825076258927335317453485041738739527958812250167899353391870587502494634302941244714394927883711587809534697624094399725750818710320200975310254627592026296280318761311973474300557927516719407826693478155687165359629902410388344861085456474897480779032577980898870830763776560805819612401617012172693487883054917860297682748944478978597481390503573735250754748708943384645674652114387432062479074792583108597597237195025228382543697971411144108015908993003588637380825874729412716827607646046206599404753176552082516185740714111541143344359283613902752414171771220586711423000079766865862907516814912882551958689688409996482423380300372904799968908674044171112808482750661003233506190925609587077528243642393651768038043987485276672011695978651336895552182337103
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 16 of the certificate chain of a 1,136-digit prime (104 intermediate primes).

Certified number1,136-digit prime
Certificatedownload
Certificate chainshow step 16 of 104

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009023231806 --detail 2 --decimal
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"id":1100000009023231806},"decimal":true,"detail":2}}'